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Finding the Fourth Proportional to 282,920.61, 390,432.03 and 153,860.59

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Solution

The fourth proportional to 282,920.61, 390,432.03 and 153,860.59 is: 212,328.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,920.61 : 390,432.03 = 153,860.59 : x
  2. Step 2: Convert to fraction form
    282,920.61/390,432.03 = 153,860.59/x
  3. Step 3: Cross multiply
    282,920.61x = 390,432.03 × 153,860.59
  4. Step 4: Simplify right side
    282,920.61x = 60,072,100,538.54
  5. Step 5: Solve for x
    x = 60,072,100,538.54/282,920.61
  6. Step 6: Final answer
    x = 212,328.47

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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.