Home / 287,878.08-397,432.35-202,100.28

Finding the Fourth Proportional to 287,878.08, 397,432.35 and 202,100.28

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Solution

The fourth proportional to 287,878.08, 397,432.35 and 202,100.28 is: 279,011.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,878.08 : 397,432.35 = 202,100.28 : x
  2. Step 2: Convert to fraction form
    287,878.08/397,432.35 = 202,100.28/x
  3. Step 3: Cross multiply
    287,878.08x = 397,432.35 × 202,100.28
  4. Step 4: Simplify right side
    287,878.08x = 80,321,189,216.06
  5. Step 5: Solve for x
    x = 80,321,189,216.06/287,878.08
  6. Step 6: Final answer
    x = 279,011.13

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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.