Home / 261,468,014.40-392,202,021.60-220,653,345.60

Finding the Fourth Proportional to 261,468,014.40, 392,202,021.60 and 220,653,345.60

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Solution

The fourth proportional to 261,468,014.40, 392,202,021.60 and 220,653,345.60 is: 330,980,018.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,468,014.40 : 392,202,021.60 = 220,653,345.60 : x
  2. Step 2: Convert to fraction form
    261,468,014.40/392,202,021.60 = 220,653,345.60/x
  3. Step 3: Cross multiply
    261,468,014.40x = 392,202,021.60 × 220,653,345.60
  4. Step 4: Simplify right side
    261,468,014.40x = 86,540,688,217,123,472
  5. Step 5: Solve for x
    x = 86,540,688,217,123,472/261,468,014.40
  6. Step 6: Final answer
    x = 330,980,018.40

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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.