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Finding the Fourth Proportional to 210,397.44, 315,479.40 and 70,079.52

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Solution

The fourth proportional to 210,397.44, 315,479.40 and 70,079.52 is: 105,080.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,397.44 : 315,479.40 = 70,079.52 : x
  2. Step 2: Convert to fraction form
    210,397.44/315,479.40 = 70,079.52/x
  3. Step 3: Cross multiply
    210,397.44x = 315,479.40 × 70,079.52
  4. Step 4: Simplify right side
    210,397.44x = 22,108,644,921.89
  5. Step 5: Solve for x
    x = 22,108,644,921.89/210,397.44
  6. Step 6: Final answer
    x = 105,080.39

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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.