Home / 282,939.84-390,442.50-155,590.92

Finding the Fourth Proportional to 282,939.84, 390,442.50 and 155,590.92

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Solution

The fourth proportional to 282,939.84, 390,442.50 and 155,590.92 is: 214,707.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,939.84 : 390,442.50 = 155,590.92 : x
  2. Step 2: Convert to fraction form
    282,939.84/390,442.50 = 155,590.92/x
  3. Step 3: Cross multiply
    282,939.84x = 390,442.50 × 155,590.92
  4. Step 4: Simplify right side
    282,939.84x = 60,749,307,782.10
  5. Step 5: Solve for x
    x = 60,749,307,782.10/282,939.84
  6. Step 6: Final answer
    x = 214,707.51

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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.