Home / 219,428.66-329,142.95-77,240.45

Finding the Fourth Proportional to 219,428.66, 329,142.95 and 77,240.45

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Solution

The fourth proportional to 219,428.66, 329,142.95 and 77,240.45 is: 115,860.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,428.66 : 329,142.95 = 77,240.45 : x
  2. Step 2: Convert to fraction form
    219,428.66/329,142.95 = 77,240.45/x
  3. Step 3: Cross multiply
    219,428.66x = 329,142.95 × 77,240.45
  4. Step 4: Simplify right side
    219,428.66x = 25,423,148,119.71
  5. Step 5: Solve for x
    x = 25,423,148,119.71/219,428.66
  6. Step 6: Final answer
    x = 115,860.66

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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.