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Finding the Fourth Proportional to 612,133.75, 918,253.55 and 168,901.75

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Solution

The fourth proportional to 612,133.75, 918,253.55 and 168,901.75 is: 253,367.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,133.75 : 918,253.55 = 168,901.75 : x
  2. Step 2: Convert to fraction form
    612,133.75/918,253.55 = 168,901.75/x
  3. Step 3: Cross multiply
    612,133.75x = 918,253.55 × 168,901.75
  4. Step 4: Simplify right side
    612,133.75x = 155,094,631,538.71
  5. Step 5: Solve for x
    x = 155,094,631,538.71/612,133.75
  6. Step 6: Final answer
    x = 253,367.23

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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.