Home / 287,889.07-397,287.63-160,572.91

Finding the Fourth Proportional to 287,889.07, 397,287.63 and 160,572.91

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Solution

The fourth proportional to 287,889.07, 397,287.63 and 160,572.91 is: 221,591.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,889.07 : 397,287.63 = 160,572.91 : x
  2. Step 2: Convert to fraction form
    287,889.07/397,287.63 = 160,572.91/x
  3. Step 3: Cross multiply
    287,889.07x = 397,287.63 × 160,572.91
  4. Step 4: Simplify right side
    287,889.07x = 63,793,630,856.10
  5. Step 5: Solve for x
    x = 63,793,630,856.10/287,889.07
  6. Step 6: Final answer
    x = 221,591.01

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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.