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Finding the Fourth Proportional to 612,140.25, 918,263.31 and 168,908.25

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Solution

The fourth proportional to 612,140.25, 918,263.31 and 168,908.25 is: 253,376.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,140.25 : 918,263.31 = 168,908.25 : x
  2. Step 2: Convert to fraction form
    612,140.25/918,263.31 = 168,908.25/x
  3. Step 3: Cross multiply
    612,140.25x = 918,263.31 × 168,908.25
  4. Step 4: Simplify right side
    612,140.25x = 155,102,248,731.31
  5. Step 5: Solve for x
    x = 155,102,248,731.31/612,140.25
  6. Step 6: Final answer
    x = 253,376.98

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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.