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Finding the Fourth Proportional to 420,197.97, 630,335.43 and 167,417.22

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Solution

The fourth proportional to 420,197.97, 630,335.43 and 167,417.22 is: 251,141.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,197.97 : 630,335.43 = 167,417.22 : x
  2. Step 2: Convert to fraction form
    420,197.97/630,335.43 = 167,417.22/x
  3. Step 3: Cross multiply
    420,197.97x = 630,335.43 × 167,417.22
  4. Step 4: Simplify right side
    420,197.97x = 105,529,005,358.11
  5. Step 5: Solve for x
    x = 105,529,005,358.11/420,197.97
  6. Step 6: Final answer
    x = 251,141.16

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1.5x scale

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.