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Finding the Fourth Proportional to 282,630.93, 390,026.23 and 155,303.79

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Solution

The fourth proportional to 282,630.93, 390,026.23 and 155,303.79 is: 214,316.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,630.93 : 390,026.23 = 155,303.79 : x
  2. Step 2: Convert to fraction form
    282,630.93/390,026.23 = 155,303.79/x
  3. Step 3: Cross multiply
    282,630.93x = 390,026.23 × 155,303.79
  4. Step 4: Simplify right side
    282,630.93x = 60,572,551,718.41
  5. Step 5: Solve for x
    x = 60,572,551,718.41/282,630.93
  6. Step 6: Final answer
    x = 214,316.78

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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.