Home / 210,400.29-315,603.14-70,158.87

Finding the Fourth Proportional to 210,400.29, 315,603.14 and 70,158.87

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Solution

The fourth proportional to 210,400.29, 315,603.14 and 70,158.87 is: 105,239.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,400.29 : 315,603.14 = 70,158.87 : x
  2. Step 2: Convert to fraction form
    210,400.29/315,603.14 = 70,158.87/x
  3. Step 3: Cross multiply
    210,400.29x = 315,603.14 × 70,158.87
  4. Step 4: Simplify right side
    210,400.29x = 22,142,359,320.06
  5. Step 5: Solve for x
    x = 22,142,359,320.06/210,400.29
  6. Step 6: Final answer
    x = 105,239.21

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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.