Home / 421,092,001.40-631,638,002.10-148,372,129.40

Finding the Fourth Proportional to 421,092,001.40, 631,638,002.10 and 148,372,129.40

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Solution

The fourth proportional to 421,092,001.40, 631,638,002.10 and 148,372,129.40 is: 222,558,194.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,092,001.40 : 631,638,002.10 = 148,372,129.40 : x
  2. Step 2: Convert to fraction form
    421,092,001.40/631,638,002.10 = 148,372,129.40/x
  3. Step 3: Cross multiply
    421,092,001.40x = 631,638,002.10 × 148,372,129.40
  4. Step 4: Simplify right side
    421,092,001.40x = 93,717,475,381,538,672
  5. Step 5: Solve for x
    x = 93,717,475,381,538,672/421,092,001.40
  6. Step 6: Final answer
    x = 222,558,194.10

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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.