Home / 651,425.20-977,137.80-178,158.40

Finding the Fourth Proportional to 651,425.20, 977,137.80 and 178,158.40

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Solution

The fourth proportional to 651,425.20, 977,137.80 and 178,158.40 is: 267,237.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,425.20 : 977,137.80 = 178,158.40 : x
  2. Step 2: Convert to fraction form
    651,425.20/977,137.80 = 178,158.40/x
  3. Step 3: Cross multiply
    651,425.20x = 977,137.80 × 178,158.40
  4. Step 4: Simplify right side
    651,425.20x = 174,085,307,027.52
  5. Step 5: Solve for x
    x = 174,085,307,027.52/651,425.20
  6. Step 6: Final answer
    x = 267,237.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.