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Finding the Fourth Proportional to 210,657.28, 316,002.72 and 70,416.64

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Solution

The fourth proportional to 210,657.28, 316,002.72 and 70,416.64 is: 105,630.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,657.28 : 316,002.72 = 70,416.64 : x
  2. Step 2: Convert to fraction form
    210,657.28/316,002.72 = 70,416.64/x
  3. Step 3: Cross multiply
    210,657.28x = 316,002.72 × 70,416.64
  4. Step 4: Simplify right side
    210,657.28x = 22,251,849,773.26
  5. Step 5: Solve for x
    x = 22,251,849,773.26/210,657.28
  6. Step 6: Final answer
    x = 105,630.58

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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.