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Finding the Fourth Proportional to 316,351.71, 436,565.35 and 173,111.77

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Solution

The fourth proportional to 316,351.71, 436,565.35 and 173,111.77 is: 238,894.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,351.71 : 436,565.35 = 173,111.77 : x
  2. Step 2: Convert to fraction form
    316,351.71/436,565.35 = 173,111.77/x
  3. Step 3: Cross multiply
    316,351.71x = 436,565.35 × 173,111.77
  4. Step 4: Simplify right side
    316,351.71x = 75,574,600,459.17
  5. Step 5: Solve for x
    x = 75,574,600,459.17/316,351.71
  6. Step 6: Final answer
    x = 238,894.24

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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.