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Finding the Fourth Proportional to 345,875.26, 515,374.45 and 308,145.42

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Solution

The fourth proportional to 345,875.26, 515,374.45 and 308,145.42 is: 459,154.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,875.26 : 515,374.45 = 308,145.42 : x
  2. Step 2: Convert to fraction form
    345,875.26/515,374.45 = 308,145.42/x
  3. Step 3: Cross multiply
    345,875.26x = 515,374.45 × 308,145.42
  4. Step 4: Simplify right side
    345,875.26x = 158,810,276,352.52
  5. Step 5: Solve for x
    x = 158,810,276,352.52/345,875.26
  6. Step 6: Final answer
    x = 459,154.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.