Home / 287,660.08-431,489.75-77,298.02

Finding the Fourth Proportional to 287,660.08, 431,489.75 and 77,298.02

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Solution

The fourth proportional to 287,660.08, 431,489.75 and 77,298.02 is: 115,946.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,660.08 : 431,489.75 = 77,298.02 : x
  2. Step 2: Convert to fraction form
    287,660.08/431,489.75 = 77,298.02/x
  3. Step 3: Cross multiply
    287,660.08x = 431,489.75 × 77,298.02
  4. Step 4: Simplify right side
    287,660.08x = 33,353,303,325.30
  5. Step 5: Solve for x
    x = 33,353,303,325.30/287,660.08
  6. Step 6: Final answer
    x = 115,946.93

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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.