Home / 287,780.02-397,387.16-180,534.40

Finding the Fourth Proportional to 287,780.02, 397,387.16 and 180,534.40

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Solution

The fourth proportional to 287,780.02, 397,387.16 and 180,534.40 is: 249,294.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,780.02 : 397,387.16 = 180,534.40 : x
  2. Step 2: Convert to fraction form
    287,780.02/397,387.16 = 180,534.40/x
  3. Step 3: Cross multiply
    287,780.02x = 397,387.16 × 180,534.40
  4. Step 4: Simplify right side
    287,780.02x = 71,742,052,498.30
  5. Step 5: Solve for x
    x = 71,742,052,498.30/287,780.02
  6. Step 6: Final answer
    x = 249,294.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.