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Finding the Fourth Proportional to 315,658.10, 473,487.15 and 79,000.40

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Solution

The fourth proportional to 315,658.10, 473,487.15 and 79,000.40 is: 118,500.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,658.10 : 473,487.15 = 79,000.40 : x
  2. Step 2: Convert to fraction form
    315,658.10/473,487.15 = 79,000.40/x
  3. Step 3: Cross multiply
    315,658.10x = 473,487.15 × 79,000.40
  4. Step 4: Simplify right side
    315,658.10x = 37,405,674,244.86
  5. Step 5: Solve for x
    x = 37,405,674,244.86/315,658.10
  6. Step 6: Final answer
    x = 118,500.60

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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.