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Finding the Fourth Proportional to 210,697.68, 316,061.04 and 70,438.08

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Solution

The fourth proportional to 210,697.68, 316,061.04 and 70,438.08 is: 105,661.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,697.68 : 316,061.04 = 70,438.08 : x
  2. Step 2: Convert to fraction form
    210,697.68/316,061.04 = 70,438.08/x
  3. Step 3: Cross multiply
    210,697.68x = 316,061.04 × 70,438.08
  4. Step 4: Simplify right side
    210,697.68x = 22,262,732,820.40
  5. Step 5: Solve for x
    x = 22,262,732,820.40/210,697.68
  6. Step 6: Final answer
    x = 105,661.97

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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.