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Finding the Fourth Proportional to 311,547.29, 429,955.52 and 173,741.76

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Solution

The fourth proportional to 311,547.29, 429,955.52 and 173,741.76 is: 239,774.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,547.29 : 429,955.52 = 173,741.76 : x
  2. Step 2: Convert to fraction form
    311,547.29/429,955.52 = 173,741.76/x
  3. Step 3: Cross multiply
    311,547.29x = 429,955.52 × 173,741.76
  4. Step 4: Simplify right side
    311,547.29x = 74,701,227,897.81
  5. Step 5: Solve for x
    x = 74,701,227,897.81/311,547.29
  6. Step 6: Final answer
    x = 239,774.93

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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.