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Finding the Fourth Proportional to 282,693.94, 390,101.16 and 155,369.64

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Solution

The fourth proportional to 282,693.94, 390,101.16 and 155,369.64 is: 214,401.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,693.94 : 390,101.16 = 155,369.64 : x
  2. Step 2: Convert to fraction form
    282,693.94/390,101.16 = 155,369.64/x
  3. Step 3: Cross multiply
    282,693.94x = 390,101.16 × 155,369.64
  4. Step 4: Simplify right side
    282,693.94x = 60,609,876,792.78
  5. Step 5: Solve for x
    x = 60,609,876,792.78/282,693.94
  6. Step 6: Final answer
    x = 214,401.05

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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.