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Finding the Fourth Proportional to 314,818.74, 472,088.79 and 90,127.98

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Solution

The fourth proportional to 314,818.74, 472,088.79 and 90,127.98 is: 135,152.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,818.74 : 472,088.79 = 90,127.98 : x
  2. Step 2: Convert to fraction form
    314,818.74/472,088.79 = 90,127.98/x
  3. Step 3: Cross multiply
    314,818.74x = 472,088.79 × 90,127.98
  4. Step 4: Simplify right side
    314,818.74x = 42,548,408,572.70
  5. Step 5: Solve for x
    x = 42,548,408,572.70/314,818.74
  6. Step 6: Final answer
    x = 135,152.08

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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.