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Finding the Fourth Proportional to 372,237.32, 513,671.95 and 219,281.78

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Solution

The fourth proportional to 372,237.32, 513,671.95 and 219,281.78 is: 302,599.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,237.32 : 513,671.95 = 219,281.78 : x
  2. Step 2: Convert to fraction form
    372,237.32/513,671.95 = 219,281.78/x
  3. Step 3: Cross multiply
    372,237.32x = 513,671.95 × 219,281.78
  4. Step 4: Simplify right side
    372,237.32x = 112,638,899,532.07
  5. Step 5: Solve for x
    x = 112,638,899,532.07/372,237.32
  6. Step 6: Final answer
    x = 302,599.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.