Home / 280,127,607.76-420,248,101.20-98,388,957.52

Finding the Fourth Proportional to 280,127,607.76, 420,248,101.20 and 98,388,957.52

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Solution

The fourth proportional to 280,127,607.76, 420,248,101.20 and 98,388,957.52 is: 147,603,347.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,127,607.76 : 420,248,101.20 = 98,388,957.52 : x
  2. Step 2: Convert to fraction form
    280,127,607.76/420,248,101.20 = 98,388,957.52/x
  3. Step 3: Cross multiply
    280,127,607.76x = 420,248,101.20 × 98,388,957.52
  4. Step 4: Simplify right side
    280,127,607.76x = 41,347,772,576,827,456
  5. Step 5: Solve for x
    x = 41,347,772,576,827,456/280,127,607.76
  6. Step 6: Final answer
    x = 147,603,347.30

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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.