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Finding the Fourth Proportional to 282,695.46, 390,115.08 and 155,368.32

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Solution

The fourth proportional to 282,695.46, 390,115.08 and 155,368.32 is: 214,405.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,695.46 : 390,115.08 = 155,368.32 : x
  2. Step 2: Convert to fraction form
    282,695.46/390,115.08 = 155,368.32/x
  3. Step 3: Cross multiply
    282,695.46x = 390,115.08 × 155,368.32
  4. Step 4: Simplify right side
    282,695.46x = 60,611,524,586.27
  5. Step 5: Solve for x
    x = 60,611,524,586.27/282,695.46
  6. Step 6: Final answer
    x = 214,405.72

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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.