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Finding the Fourth Proportional to 319,284.71, 478,385.08 and 192,658.87

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Solution

The fourth proportional to 319,284.71, 478,385.08 and 192,658.87 is: 288,661.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,284.71 : 478,385.08 = 192,658.87 : x
  2. Step 2: Convert to fraction form
    319,284.71/478,385.08 = 192,658.87/x
  3. Step 3: Cross multiply
    319,284.71x = 478,385.08 × 192,658.87
  4. Step 4: Simplify right side
    319,284.71x = 92,165,127,984.05
  5. Step 5: Solve for x
    x = 92,165,127,984.05/319,284.71
  6. Step 6: Final answer
    x = 288,661.27

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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.