Home / 435,724.60-653,586.90-258,140.20

Finding the Fourth Proportional to 435,724.60, 653,586.90 and 258,140.20

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Solution

The fourth proportional to 435,724.60, 653,586.90 and 258,140.20 is: 387,210.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,724.60 : 653,586.90 = 258,140.20 : x
  2. Step 2: Convert to fraction form
    435,724.60/653,586.90 = 258,140.20/x
  3. Step 3: Cross multiply
    435,724.60x = 653,586.90 × 258,140.20
  4. Step 4: Simplify right side
    435,724.60x = 168,717,053,083.38
  5. Step 5: Solve for x
    x = 168,717,053,083.38/435,724.60
  6. Step 6: Final answer
    x = 387,210.30

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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.