Home / 261,980,601.60-392,970,902.40-80,227,779.60

Finding the Fourth Proportional to 261,980,601.60, 392,970,902.40 and 80,227,779.60

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Solution

The fourth proportional to 261,980,601.60, 392,970,902.40 and 80,227,779.60 is: 120,341,669.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,980,601.60 : 392,970,902.40 = 80,227,779.60 : x
  2. Step 2: Convert to fraction form
    261,980,601.60/392,970,902.40 = 80,227,779.60/x
  3. Step 3: Cross multiply
    261,980,601.60x = 392,970,902.40 × 80,227,779.60
  4. Step 4: Simplify right side
    261,980,601.60x = 31,527,182,946,960,308
  5. Step 5: Solve for x
    x = 31,527,182,946,960,308/261,980,601.60
  6. Step 6: Final answer
    x = 120,341,669.40

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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.