Home / 434,905.60-652,390.80-154,386.40

Finding the Fourth Proportional to 434,905.60, 652,390.80 and 154,386.40

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Solution

The fourth proportional to 434,905.60, 652,390.80 and 154,386.40 is: 231,591.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,905.60 : 652,390.80 = 154,386.40 : x
  2. Step 2: Convert to fraction form
    434,905.60/652,390.80 = 154,386.40/x
  3. Step 3: Cross multiply
    434,905.60x = 652,390.80 × 154,386.40
  4. Step 4: Simplify right side
    434,905.60x = 100,720,267,005.12
  5. Step 5: Solve for x
    x = 100,720,267,005.12/434,905.60
  6. Step 6: Final answer
    x = 231,591.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.