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Finding the Fourth Proportional to 478,281.07, 717,172.50 and 178,515.12

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Solution

The fourth proportional to 478,281.07, 717,172.50 and 178,515.12 is: 267,679.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,281.07 : 717,172.50 = 178,515.12 : x
  2. Step 2: Convert to fraction form
    478,281.07/717,172.50 = 178,515.12/x
  3. Step 3: Cross multiply
    478,281.07x = 717,172.50 × 178,515.12
  4. Step 4: Simplify right side
    478,281.07x = 128,026,134,898.20
  5. Step 5: Solve for x
    x = 128,026,134,898.20/478,281.07
  6. Step 6: Final answer
    x = 267,679.70

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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.