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Finding the Fourth Proportional to 210,398.04, 315,599.76 and 70,156.62

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Solution

The fourth proportional to 210,398.04, 315,599.76 and 70,156.62 is: 105,235.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,398.04 : 315,599.76 = 70,156.62 : x
  2. Step 2: Convert to fraction form
    210,398.04/315,599.76 = 70,156.62/x
  3. Step 3: Cross multiply
    210,398.04x = 315,599.76 × 70,156.62
  4. Step 4: Simplify right side
    210,398.04x = 22,141,412,434.41
  5. Step 5: Solve for x
    x = 22,141,412,434.41/210,398.04
  6. Step 6: Final answer
    x = 105,235.83

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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.