Home / 287,458.02-431,250.14-85,038.28

Finding the Fourth Proportional to 287,458.02, 431,250.14 and 85,038.28

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Solution

The fourth proportional to 287,458.02, 431,250.14 and 85,038.28 is: 127,576.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,458.02 : 431,250.14 = 85,038.28 : x
  2. Step 2: Convert to fraction form
    287,458.02/431,250.14 = 85,038.28/x
  3. Step 3: Cross multiply
    287,458.02x = 431,250.14 × 85,038.28
  4. Step 4: Simplify right side
    287,458.02x = 36,672,769,289.83
  5. Step 5: Solve for x
    x = 36,672,769,289.83/287,458.02
  6. Step 6: Final answer
    x = 127,576.09

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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.