Home / 305,220.36-457,365.78-155,235.90

Finding the Fourth Proportional to 305,220.36, 457,365.78 and 155,235.90

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Solution

The fourth proportional to 305,220.36, 457,365.78 and 155,235.90 is: 232,617.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,220.36 : 457,365.78 = 155,235.90 : x
  2. Step 2: Convert to fraction form
    305,220.36/457,365.78 = 155,235.90/x
  3. Step 3: Cross multiply
    305,220.36x = 457,365.78 × 155,235.90
  4. Step 4: Simplify right side
    305,220.36x = 70,999,588,487.50
  5. Step 5: Solve for x
    x = 70,999,588,487.50/305,220.36
  6. Step 6: Final answer
    x = 232,617.47

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1.5x scale

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.