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Finding the Fourth Proportional to 277,319.40, 382,700.84 and 156,486.28

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Solution

The fourth proportional to 277,319.40, 382,700.84 and 156,486.28 is: 215,951.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,319.40 : 382,700.84 = 156,486.28 : x
  2. Step 2: Convert to fraction form
    277,319.40/382,700.84 = 156,486.28/x
  3. Step 3: Cross multiply
    277,319.40x = 382,700.84 × 156,486.28
  4. Step 4: Simplify right side
    277,319.40x = 59,887,430,804.48
  5. Step 5: Solve for x
    x = 59,887,430,804.48/277,319.40
  6. Step 6: Final answer
    x = 215,951.10

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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.