Home / 287,743.02-397,336.10-180,497.40

Finding the Fourth Proportional to 287,743.02, 397,336.10 and 180,497.40

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Solution

The fourth proportional to 287,743.02, 397,336.10 and 180,497.40 is: 249,243.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,743.02 : 397,336.10 = 180,497.40 : x
  2. Step 2: Convert to fraction form
    287,743.02/397,336.10 = 180,497.40/x
  3. Step 3: Cross multiply
    287,743.02x = 397,336.10 × 180,497.40
  4. Step 4: Simplify right side
    287,743.02x = 71,718,132,073.65
  5. Step 5: Solve for x
    x = 71,718,132,073.65/287,743.02
  6. Step 6: Final answer
    x = 249,243.69

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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.