Home / 390,941.76-539,557.65-247,715.22

Finding the Fourth Proportional to 390,941.76, 539,557.65 and 247,715.22

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Solution

The fourth proportional to 390,941.76, 539,557.65 and 247,715.22 is: 341,883.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,941.76 : 539,557.65 = 247,715.22 : x
  2. Step 2: Convert to fraction form
    390,941.76/539,557.65 = 247,715.22/x
  3. Step 3: Cross multiply
    390,941.76x = 539,557.65 × 247,715.22
  4. Step 4: Simplify right side
    390,941.76x = 133,656,641,972.43
  5. Step 5: Solve for x
    x = 133,656,641,972.43/390,941.76
  6. Step 6: Final answer
    x = 341,883.77

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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.