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Finding the Fourth Proportional to 356,075.80, 534,416.10 and 145,864.60

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Solution

The fourth proportional to 356,075.80, 534,416.10 and 145,864.60 is: 218,920.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,075.80 : 534,416.10 = 145,864.60 : x
  2. Step 2: Convert to fraction form
    356,075.80/534,416.10 = 145,864.60/x
  3. Step 3: Cross multiply
    356,075.80x = 534,416.10 × 145,864.60
  4. Step 4: Simplify right side
    356,075.80x = 77,952,390,660.06
  5. Step 5: Solve for x
    x = 77,952,390,660.06/356,075.80
  6. Step 6: Final answer
    x = 218,920.78

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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.