Home / 345,064.19-517,421.23-157,915.31

Finding the Fourth Proportional to 345,064.19, 517,421.23 and 157,915.31

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Solution

The fourth proportional to 345,064.19, 517,421.23 and 157,915.31 is: 236,792.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,064.19 : 517,421.23 = 157,915.31 : x
  2. Step 2: Convert to fraction form
    345,064.19/517,421.23 = 157,915.31/x
  3. Step 3: Cross multiply
    345,064.19x = 517,421.23 × 157,915.31
  4. Step 4: Simplify right side
    345,064.19x = 81,708,734,834.80
  5. Step 5: Solve for x
    x = 81,708,734,834.80/345,064.19
  6. Step 6: Final answer
    x = 236,792.85

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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.