Home / 420,432.30-630,273.36-154,130.60

Finding the Fourth Proportional to 420,432.30, 630,273.36 and 154,130.60

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Solution

The fourth proportional to 420,432.30, 630,273.36 and 154,130.60 is: 231,058.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,432.30 : 630,273.36 = 154,130.60 : x
  2. Step 2: Convert to fraction form
    420,432.30/630,273.36 = 154,130.60/x
  3. Step 3: Cross multiply
    420,432.30x = 630,273.36 × 154,130.60
  4. Step 4: Simplify right side
    420,432.30x = 97,144,411,140.82
  5. Step 5: Solve for x
    x = 97,144,411,140.82/420,432.30
  6. Step 6: Final answer
    x = 231,058.39

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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.