Home / 278,057,326.40-417,085,989.60-213,686,043.20

Finding the Fourth Proportional to 278,057,326.40, 417,085,989.60 and 213,686,043.20

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Solution

The fourth proportional to 278,057,326.40, 417,085,989.60 and 213,686,043.20 is: 320,529,064.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,057,326.40 : 417,085,989.60 = 213,686,043.20 : x
  2. Step 2: Convert to fraction form
    278,057,326.40/417,085,989.60 = 213,686,043.20/x
  3. Step 3: Cross multiply
    278,057,326.40x = 417,085,989.60 × 213,686,043.20
  4. Step 4: Simplify right side
    278,057,326.40x = 89,125,454,791,780,352
  5. Step 5: Solve for x
    x = 89,125,454,791,780,352/278,057,326.40
  6. Step 6: Final answer
    x = 320,529,064.80

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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.