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Finding the Fourth Proportional to 292,520.57, 438,780.85 and 70,904.57

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Solution

The fourth proportional to 292,520.57, 438,780.85 and 70,904.57 is: 106,356.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,520.57 : 438,780.85 = 70,904.57 : x
  2. Step 2: Convert to fraction form
    292,520.57/438,780.85 = 70,904.57/x
  3. Step 3: Cross multiply
    292,520.57x = 438,780.85 × 70,904.57
  4. Step 4: Simplify right side
    292,520.57x = 31,111,564,945.06
  5. Step 5: Solve for x
    x = 31,111,564,945.06/292,520.57
  6. Step 6: Final answer
    x = 106,356.85

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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.