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Finding the Fourth Proportional to 282,758.52, 390,209.52 and 153,696.93

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Solution

The fourth proportional to 282,758.52, 390,209.52 and 153,696.93 is: 212,103.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,758.52 : 390,209.52 = 153,696.93 : x
  2. Step 2: Convert to fraction form
    282,758.52/390,209.52 = 153,696.93/x
  3. Step 3: Cross multiply
    282,758.52x = 390,209.52 × 153,696.93
  4. Step 4: Simplify right side
    282,758.52x = 59,974,005,280.77
  5. Step 5: Solve for x
    x = 59,974,005,280.77/282,758.52
  6. Step 6: Final answer
    x = 212,103.26

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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.