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Finding the Fourth Proportional to 374,358, 561,377.16 and 216,695.28

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Solution

The fourth proportional to 374,358, 561,377.16 and 216,695.28 is: 324,950.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,358 : 561,377.16 = 216,695.28 : x
  2. Step 2: Convert to fraction form
    374,358/561,377.16 = 216,695.28/x
  3. Step 3: Cross multiply
    374,358x = 561,377.16 × 216,695.28
  4. Step 4: Simplify right side
    374,358x = 121,647,780,871.81
  5. Step 5: Solve for x
    x = 121,647,780,871.81/374,358
  6. Step 6: Final answer
    x = 324,950.40

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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.