Home / 287,800.02-431,739.38-98,209.40

Finding the Fourth Proportional to 287,800.02, 431,739.38 and 98,209.40

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Solution

The fourth proportional to 287,800.02, 431,739.38 and 98,209.40 is: 147,327.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,800.02 : 431,739.38 = 98,209.40 : x
  2. Step 2: Convert to fraction form
    287,800.02/431,739.38 = 98,209.40/x
  3. Step 3: Cross multiply
    287,800.02x = 431,739.38 × 98,209.40
  4. Step 4: Simplify right side
    287,800.02x = 42,400,863,553.00
  5. Step 5: Solve for x
    x = 42,400,863,553.00/287,800.02
  6. Step 6: Final answer
    x = 147,327.52

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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.