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Finding the Fourth Proportional to 310,874.45, 429,006.72 and 176,738.45

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Solution

The fourth proportional to 310,874.45, 429,006.72 and 176,738.45 is: 243,899.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,874.45 : 429,006.72 = 176,738.45 : x
  2. Step 2: Convert to fraction form
    310,874.45/429,006.72 = 176,738.45/x
  3. Step 3: Cross multiply
    310,874.45x = 429,006.72 × 176,738.45
  4. Step 4: Simplify right side
    310,874.45x = 75,821,980,587.35
  5. Step 5: Solve for x
    x = 75,821,980,587.35/310,874.45
  6. Step 6: Final answer
    x = 243,899.05

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1.5x scale

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.