Home / 210,456.28-315,700.62-70,214.68

Finding the Fourth Proportional to 210,456.28, 315,700.62 and 70,214.68

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Solution

The fourth proportional to 210,456.28, 315,700.62 and 70,214.68 is: 105,327.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,456.28 : 315,700.62 = 70,214.68 : x
  2. Step 2: Convert to fraction form
    210,456.28/315,700.62 = 70,214.68/x
  3. Step 3: Cross multiply
    210,456.28x = 315,700.62 × 70,214.68
  4. Step 4: Simplify right side
    210,456.28x = 22,166,818,009.10
  5. Step 5: Solve for x
    x = 22,166,818,009.10/210,456.28
  6. Step 6: Final answer
    x = 105,327.42

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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.