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Finding the Fourth Proportional to 556,244.28, 767,645.25 and 311,256.54

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Solution

The fourth proportional to 556,244.28, 767,645.25 and 311,256.54 is: 429,549.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,244.28 : 767,645.25 = 311,256.54 : x
  2. Step 2: Convert to fraction form
    556,244.28/767,645.25 = 311,256.54/x
  3. Step 3: Cross multiply
    556,244.28x = 767,645.25 × 311,256.54
  4. Step 4: Simplify right side
    556,244.28x = 238,934,604,462.44
  5. Step 5: Solve for x
    x = 238,934,604,462.44/556,244.28
  6. Step 6: Final answer
    x = 429,549.77

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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.