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Finding the Fourth Proportional to 357,276.08, 535,506.42 and 143,907.35

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Solution

The fourth proportional to 357,276.08, 535,506.42 and 143,907.35 is: 215,696.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,276.08 : 535,506.42 = 143,907.35 : x
  2. Step 2: Convert to fraction form
    357,276.08/535,506.42 = 143,907.35/x
  3. Step 3: Cross multiply
    357,276.08x = 535,506.42 × 143,907.35
  4. Step 4: Simplify right side
    357,276.08x = 77,063,309,810.19
  5. Step 5: Solve for x
    x = 77,063,309,810.19/357,276.08
  6. Step 6: Final answer
    x = 215,696.81

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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.