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Finding the Fourth Proportional to 245,555.93, 338,913.71 and 153,717.89

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Solution

The fourth proportional to 245,555.93, 338,913.71 and 153,717.89 is: 212,159.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,555.93 : 338,913.71 = 153,717.89 : x
  2. Step 2: Convert to fraction form
    245,555.93/338,913.71 = 153,717.89/x
  3. Step 3: Cross multiply
    245,555.93x = 338,913.71 × 153,717.89
  4. Step 4: Simplify right side
    245,555.93x = 52,097,101,624.85
  5. Step 5: Solve for x
    x = 52,097,101,624.85/245,555.93
  6. Step 6: Final answer
    x = 212,159.82

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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.