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Finding the Fourth Proportional to 319,063.70, 478,509.15 and 94,423.70

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Solution

The fourth proportional to 319,063.70, 478,509.15 and 94,423.70 is: 141,609.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,063.70 : 478,509.15 = 94,423.70 : x
  2. Step 2: Convert to fraction form
    319,063.70/478,509.15 = 94,423.70/x
  3. Step 3: Cross multiply
    319,063.70x = 478,509.15 × 94,423.70
  4. Step 4: Simplify right side
    319,063.70x = 45,182,604,426.86
  5. Step 5: Solve for x
    x = 45,182,604,426.86/319,063.70
  6. Step 6: Final answer
    x = 141,609.98

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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.