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Finding the Fourth Proportional to 645,760.96, 968,565.80 and 172,483.22

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Solution

The fourth proportional to 645,760.96, 968,565.80 and 172,483.22 is: 258,704.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,760.96 : 968,565.80 = 172,483.22 : x
  2. Step 2: Convert to fraction form
    645,760.96/968,565.80 = 172,483.22/x
  3. Step 3: Cross multiply
    645,760.96x = 968,565.80 × 172,483.22
  4. Step 4: Simplify right side
    645,760.96x = 167,061,350,818.50
  5. Step 5: Solve for x
    x = 167,061,350,818.50/645,760.96
  6. Step 6: Final answer
    x = 258,704.63

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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.