Home / 282,922.40-390,440.40-153,869.60

Finding the Fourth Proportional to 282,922.40, 390,440.40 and 153,869.60

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Solution

The fourth proportional to 282,922.40, 390,440.40 and 153,869.60 is: 212,344.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,922.40 : 390,440.40 = 153,869.60 : x
  2. Step 2: Convert to fraction form
    282,922.40/390,440.40 = 153,869.60/x
  3. Step 3: Cross multiply
    282,922.40x = 390,440.40 × 153,869.60
  4. Step 4: Simplify right side
    282,922.40x = 60,076,908,171.84
  5. Step 5: Solve for x
    x = 60,076,908,171.84/282,922.40
  6. Step 6: Final answer
    x = 212,344.12

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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.