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Finding the Fourth Proportional to 614,619.90, 921,601.80 and 259,232.40

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Solution

The fourth proportional to 614,619.90, 921,601.80 and 259,232.40 is: 388,710.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,619.90 : 921,601.80 = 259,232.40 : x
  2. Step 2: Convert to fraction form
    614,619.90/921,601.80 = 259,232.40/x
  3. Step 3: Cross multiply
    614,619.90x = 921,601.80 × 259,232.40
  4. Step 4: Simplify right side
    614,619.90x = 238,909,046,458.32
  5. Step 5: Solve for x
    x = 238,909,046,458.32/614,619.90
  6. Step 6: Final answer
    x = 388,710.24

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1.5x scale

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.