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Finding the Fourth Proportional to 282,692.58, 390,119.04 and 155,368.38

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Solution

The fourth proportional to 282,692.58, 390,119.04 and 155,368.38 is: 214,410.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,692.58 : 390,119.04 = 155,368.38 : x
  2. Step 2: Convert to fraction form
    282,692.58/390,119.04 = 155,368.38/x
  3. Step 3: Cross multiply
    282,692.58x = 390,119.04 × 155,368.38
  4. Step 4: Simplify right side
    282,692.58x = 60,612,163,251.96
  5. Step 5: Solve for x
    x = 60,612,163,251.96/282,692.58
  6. Step 6: Final answer
    x = 214,410.17

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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.