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Finding the Fourth Proportional to 319,881.12, 480,132.72 and 153,785.76

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Solution

The fourth proportional to 319,881.12, 480,132.72 and 153,785.76 is: 230,828.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,881.12 : 480,132.72 = 153,785.76 : x
  2. Step 2: Convert to fraction form
    319,881.12/480,132.72 = 153,785.76/x
  3. Step 3: Cross multiply
    319,881.12x = 480,132.72 × 153,785.76
  4. Step 4: Simplify right side
    319,881.12x = 73,837,575,246.07
  5. Step 5: Solve for x
    x = 73,837,575,246.07/319,881.12
  6. Step 6: Final answer
    x = 230,828.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.