Home / 285,264.08-427,878.20-74,897.36

Finding the Fourth Proportional to 285,264.08, 427,878.20 and 74,897.36

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Solution

The fourth proportional to 285,264.08, 427,878.20 and 74,897.36 is: 112,341.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,264.08 : 427,878.20 = 74,897.36 : x
  2. Step 2: Convert to fraction form
    285,264.08/427,878.20 = 74,897.36/x
  3. Step 3: Cross multiply
    285,264.08x = 427,878.20 × 74,897.36
  4. Step 4: Simplify right side
    285,264.08x = 32,046,947,581.55
  5. Step 5: Solve for x
    x = 32,046,947,581.55/285,264.08
  6. Step 6: Final answer
    x = 112,341.34

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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.