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Finding the Fourth Proportional to 282,808.36, 390,265.50 and 155,482.96

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Solution

The fourth proportional to 282,808.36, 390,265.50 and 155,482.96 is: 214,560.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,808.36 : 390,265.50 = 155,482.96 : x
  2. Step 2: Convert to fraction form
    282,808.36/390,265.50 = 155,482.96/x
  3. Step 3: Cross multiply
    282,808.36x = 390,265.50 × 155,482.96
  4. Step 4: Simplify right side
    282,808.36x = 60,679,635,125.88
  5. Step 5: Solve for x
    x = 60,679,635,125.88/282,808.36
  6. Step 6: Final answer
    x = 214,560.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.