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Finding the Fourth Proportional to 292,473,703.78, 438,710,529.04 and 128,711,460.29

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Solution

The fourth proportional to 292,473,703.78, 438,710,529.04 and 128,711,460.29 is: 193,067,178.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,473,703.78 : 438,710,529.04 = 128,711,460.29 : x
  2. Step 2: Convert to fraction form
    292,473,703.78/438,710,529.04 = 128,711,460.29/x
  3. Step 3: Cross multiply
    292,473,703.78x = 438,710,529.04 × 128,711,460.29
  4. Step 4: Simplify right side
    292,473,703.78x = 56,467,072,834,821,520
  5. Step 5: Solve for x
    x = 56,467,072,834,821,520/292,473,703.78
  6. Step 6: Final answer
    x = 193,067,178.71

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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.