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Finding the Fourth Proportional to 312,726.99, 468,715.05 and 144,015.74

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Solution

The fourth proportional to 312,726.99, 468,715.05 and 144,015.74 is: 215,850.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,726.99 : 468,715.05 = 144,015.74 : x
  2. Step 2: Convert to fraction form
    312,726.99/468,715.05 = 144,015.74/x
  3. Step 3: Cross multiply
    312,726.99x = 468,715.05 × 144,015.74
  4. Step 4: Simplify right side
    312,726.99x = 67,502,344,774.89
  5. Step 5: Solve for x
    x = 67,502,344,774.89/312,726.99
  6. Step 6: Final answer
    x = 215,850.72

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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.