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Finding the Fourth Proportional to 282,630.69, 390,025.92 and 155,303.55

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Solution

The fourth proportional to 282,630.69, 390,025.92 and 155,303.55 is: 214,316.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,630.69 : 390,025.92 = 155,303.55 : x
  2. Step 2: Convert to fraction form
    282,630.69/390,025.92 = 155,303.55/x
  3. Step 3: Cross multiply
    282,630.69x = 390,025.92 × 155,303.55
  4. Step 4: Simplify right side
    282,630.69x = 60,572,409,968.02
  5. Step 5: Solve for x
    x = 60,572,409,968.02/282,630.69
  6. Step 6: Final answer
    x = 214,316.46

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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.