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Finding the Fourth Proportional to 612,312.28, 918,485.70 and 169,080.28

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Solution

The fourth proportional to 612,312.28, 918,485.70 and 169,080.28 is: 253,625.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,312.28 : 918,485.70 = 169,080.28 : x
  2. Step 2: Convert to fraction form
    612,312.28/918,485.70 = 169,080.28/x
  3. Step 3: Cross multiply
    612,312.28x = 918,485.70 × 169,080.28
  4. Step 4: Simplify right side
    612,312.28x = 155,297,819,332.00
  5. Step 5: Solve for x
    x = 155,297,819,332.00/612,312.28
  6. Step 6: Final answer
    x = 253,625.19

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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.