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Finding the Fourth Proportional to 358,436.65, 537,656.38 and 145,208.59

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Solution

The fourth proportional to 358,436.65, 537,656.38 and 145,208.59 is: 217,813.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,436.65 : 537,656.38 = 145,208.59 : x
  2. Step 2: Convert to fraction form
    358,436.65/537,656.38 = 145,208.59/x
  3. Step 3: Cross multiply
    358,436.65x = 537,656.38 × 145,208.59
  4. Step 4: Simplify right side
    358,436.65x = 78,072,324,844.30
  5. Step 5: Solve for x
    x = 78,072,324,844.30/358,436.65
  6. Step 6: Final answer
    x = 217,813.45

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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.