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Finding the Fourth Proportional to 318,870.91, 478,277.20 and 97,254.91

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Solution

The fourth proportional to 318,870.91, 478,277.20 and 97,254.91 is: 145,873.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,870.91 : 478,277.20 = 97,254.91 : x
  2. Step 2: Convert to fraction form
    318,870.91/478,277.20 = 97,254.91/x
  3. Step 3: Cross multiply
    318,870.91x = 478,277.20 × 97,254.91
  4. Step 4: Simplify right side
    318,870.91x = 46,514,806,041.05
  5. Step 5: Solve for x
    x = 46,514,806,041.05/318,870.91
  6. Step 6: Final answer
    x = 145,873.47

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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.