Home / 385,485.48-578,158.56-104,937.12

Finding the Fourth Proportional to 385,485.48, 578,158.56 and 104,937.12

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Solution

The fourth proportional to 385,485.48, 578,158.56 and 104,937.12 is: 157,386.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,485.48 : 578,158.56 = 104,937.12 : x
  2. Step 2: Convert to fraction form
    385,485.48/578,158.56 = 104,937.12/x
  3. Step 3: Cross multiply
    385,485.48x = 578,158.56 × 104,937.12
  4. Step 4: Simplify right side
    385,485.48x = 60,670,294,189.75
  5. Step 5: Solve for x
    x = 60,670,294,189.75/385,485.48
  6. Step 6: Final answer
    x = 157,386.72

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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.