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Finding the Fourth Proportional to 292,473,697.97, 438,710,520.32 and 128,711,454.48

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Solution

The fourth proportional to 292,473,697.97, 438,710,520.32 and 128,711,454.48 is: 193,067,170.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,473,697.97 : 438,710,520.32 = 128,711,454.48 : x
  2. Step 2: Convert to fraction form
    292,473,697.97/438,710,520.32 = 128,711,454.48/x
  3. Step 3: Cross multiply
    292,473,697.97x = 438,710,520.32 × 128,711,454.48
  4. Step 4: Simplify right side
    292,473,697.97x = 56,467,069,165,421,240
  5. Step 5: Solve for x
    x = 56,467,069,165,421,240/292,473,697.97
  6. Step 6: Final answer
    x = 193,067,170.00

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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.