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Finding the Fourth Proportional to 385,399.79, 578,085.80 and 101,088.07

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Solution

The fourth proportional to 385,399.79, 578,085.80 and 101,088.07 is: 151,628.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,399.79 : 578,085.80 = 101,088.07 : x
  2. Step 2: Convert to fraction form
    385,399.79/578,085.80 = 101,088.07/x
  3. Step 3: Cross multiply
    385,399.79x = 578,085.80 × 101,088.07
  4. Step 4: Simplify right side
    385,399.79x = 58,437,575,865.75
  5. Step 5: Solve for x
    x = 58,437,575,865.75/385,399.79
  6. Step 6: Final answer
    x = 151,628.46

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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.