Home / 389,700.10-584,428.65-153,115.30

Finding the Fourth Proportional to 389,700.10, 584,428.65 and 153,115.30

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Solution

The fourth proportional to 389,700.10, 584,428.65 and 153,115.30 is: 229,625.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,700.10 : 584,428.65 = 153,115.30 : x
  2. Step 2: Convert to fraction form
    389,700.10/584,428.65 = 153,115.30/x
  3. Step 3: Cross multiply
    389,700.10x = 584,428.65 × 153,115.30
  4. Step 4: Simplify right side
    389,700.10x = 89,484,968,073.35
  5. Step 5: Solve for x
    x = 89,484,968,073.35/389,700.10
  6. Step 6: Final answer
    x = 229,625.21

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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.