Home / 219,210.90-328,233.15-139,895.70

Finding the Fourth Proportional to 219,210.90, 328,233.15 and 139,895.70

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Solution

The fourth proportional to 219,210.90, 328,233.15 and 139,895.70 is: 209,471.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,210.90 : 328,233.15 = 139,895.70 : x
  2. Step 2: Convert to fraction form
    219,210.90/328,233.15 = 139,895.70/x
  3. Step 3: Cross multiply
    219,210.90x = 328,233.15 × 139,895.70
  4. Step 4: Simplify right side
    219,210.90x = 45,918,406,282.46
  5. Step 5: Solve for x
    x = 45,918,406,282.46/219,210.90
  6. Step 6: Final answer
    x = 209,471.36

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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.