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Finding the Fourth Proportional to 319,227.30, 478,808.55 and 108,862.20

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Solution

The fourth proportional to 319,227.30, 478,808.55 and 108,862.20 is: 163,282.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,227.30 : 478,808.55 = 108,862.20 : x
  2. Step 2: Convert to fraction form
    319,227.30/478,808.55 = 108,862.20/x
  3. Step 3: Cross multiply
    319,227.30x = 478,808.55 × 108,862.20
  4. Step 4: Simplify right side
    319,227.30x = 52,124,152,131.81
  5. Step 5: Solve for x
    x = 52,124,152,131.81/319,227.30
  6. Step 6: Final answer
    x = 163,282.25

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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.