Home / 421,092,000.40-631,638,000.60-148,372,128.40

Finding the Fourth Proportional to 421,092,000.40, 631,638,000.60 and 148,372,128.40

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Solution

The fourth proportional to 421,092,000.40, 631,638,000.60 and 148,372,128.40 is: 222,558,192.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,092,000.40 : 631,638,000.60 = 148,372,128.40 : x
  2. Step 2: Convert to fraction form
    421,092,000.40/631,638,000.60 = 148,372,128.40/x
  3. Step 3: Cross multiply
    421,092,000.40x = 631,638,000.60 × 148,372,128.40
  4. Step 4: Simplify right side
    421,092,000.40x = 93,717,474,527,342,480
  5. Step 5: Solve for x
    x = 93,717,474,527,342,480/421,092,000.40
  6. Step 6: Final answer
    x = 222,558,192.60

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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.