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Finding the Fourth Proportional to 292,220.70, 438,298.65 and 239,538.30

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Solution

The fourth proportional to 292,220.70, 438,298.65 and 239,538.30 is: 359,280.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,220.70 : 438,298.65 = 239,538.30 : x
  2. Step 2: Convert to fraction form
    292,220.70/438,298.65 = 239,538.30/x
  3. Step 3: Cross multiply
    292,220.70x = 438,298.65 × 239,538.30
  4. Step 4: Simplify right side
    292,220.70x = 104,989,313,513.30
  5. Step 5: Solve for x
    x = 104,989,313,513.30/292,220.70
  6. Step 6: Final answer
    x = 359,280.89

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1.5x scale

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.