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Finding the Fourth Proportional to 282,673.68, 390,091.86 and 155,351.40

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Solution

The fourth proportional to 282,673.68, 390,091.86 and 155,351.40 is: 214,386.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,673.68 : 390,091.86 = 155,351.40 : x
  2. Step 2: Convert to fraction form
    282,673.68/390,091.86 = 155,351.40/x
  3. Step 3: Cross multiply
    282,673.68x = 390,091.86 × 155,351.40
  4. Step 4: Simplify right side
    282,673.68x = 60,601,316,579.60
  5. Step 5: Solve for x
    x = 60,601,316,579.60/282,673.68
  6. Step 6: Final answer
    x = 214,386.13

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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.