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Finding the Fourth Proportional to 310,876.45, 429,009.48 and 176,740.45

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Solution

The fourth proportional to 310,876.45, 429,009.48 and 176,740.45 is: 243,901.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,876.45 : 429,009.48 = 176,740.45 : x
  2. Step 2: Convert to fraction form
    310,876.45/429,009.48 = 176,740.45/x
  3. Step 3: Cross multiply
    310,876.45x = 429,009.48 × 176,740.45
  4. Step 4: Simplify right side
    310,876.45x = 75,823,328,549.47
  5. Step 5: Solve for x
    x = 75,823,328,549.47/310,876.45
  6. Step 6: Final answer
    x = 243,901.81

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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.