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Finding the Fourth Proportional to 310,877.45, 429,010.86 and 176,741.45

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Solution

The fourth proportional to 310,877.45, 429,010.86 and 176,741.45 is: 243,903.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,877.45 : 429,010.86 = 176,741.45 : x
  2. Step 2: Convert to fraction form
    310,877.45/429,010.86 = 176,741.45/x
  3. Step 3: Cross multiply
    310,877.45x = 429,010.86 × 176,741.45
  4. Step 4: Simplify right side
    310,877.45x = 75,823,999,317.09
  5. Step 5: Solve for x
    x = 75,823,999,317.09/310,877.45
  6. Step 6: Final answer
    x = 243,903.19

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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.