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Finding the Fourth Proportional to 314,817.74, 472,087.29 and 90,126.98

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Solution

The fourth proportional to 314,817.74, 472,087.29 and 90,126.98 is: 135,150.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,817.74 : 472,087.29 = 90,126.98 : x
  2. Step 2: Convert to fraction form
    314,817.74/472,087.29 = 90,126.98/x
  3. Step 3: Cross multiply
    314,817.74x = 472,087.29 × 90,126.98
  4. Step 4: Simplify right side
    314,817.74x = 42,547,801,293.45
  5. Step 5: Solve for x
    x = 42,547,801,293.45/314,817.74
  6. Step 6: Final answer
    x = 135,150.58

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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.