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Finding the Fourth Proportional to 282,693.95, 390,101.15 and 155,369.64

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Solution

The fourth proportional to 282,693.95, 390,101.15 and 155,369.64 is: 214,401.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,693.95 : 390,101.15 = 155,369.64 : x
  2. Step 2: Convert to fraction form
    282,693.95/390,101.15 = 155,369.64/x
  3. Step 3: Cross multiply
    282,693.95x = 390,101.15 × 155,369.64
  4. Step 4: Simplify right side
    282,693.95x = 60,609,874,462.24
  5. Step 5: Solve for x
    x = 60,609,874,462.24/282,693.95
  6. Step 6: Final answer
    x = 214,401.04

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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.