Home / 282,834.90-390,312.09-155,518.74

Finding the Fourth Proportional to 282,834.90, 390,312.09 and 155,518.74

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Solution

The fourth proportional to 282,834.90, 390,312.09 and 155,518.74 is: 214,615.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,834.90 : 390,312.09 = 155,518.74 : x
  2. Step 2: Convert to fraction form
    282,834.90/390,312.09 = 155,518.74/x
  3. Step 3: Cross multiply
    282,834.90x = 390,312.09 × 155,518.74
  4. Step 4: Simplify right side
    282,834.90x = 60,700,844,443.57
  5. Step 5: Solve for x
    x = 60,700,844,443.57/282,834.90
  6. Step 6: Final answer
    x = 214,615.82

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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.