Home / 390,730.08-539,312.64-229,693.04

Finding the Fourth Proportional to 390,730.08, 539,312.64 and 229,693.04

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Solution

The fourth proportional to 390,730.08, 539,312.64 and 229,693.04 is: 317,038.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,730.08 : 539,312.64 = 229,693.04 : x
  2. Step 2: Convert to fraction form
    390,730.08/539,312.64 = 229,693.04/x
  3. Step 3: Cross multiply
    390,730.08x = 539,312.64 × 229,693.04
  4. Step 4: Simplify right side
    390,730.08x = 123,876,359,792.03
  5. Step 5: Solve for x
    x = 123,876,359,792.03/390,730.08
  6. Step 6: Final answer
    x = 317,038.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.