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Finding the Fourth Proportional to 528,476.93, 792,713.23 and 191,438.67

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Solution

The fourth proportional to 528,476.93, 792,713.23 and 191,438.67 is: 287,157.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,476.93 : 792,713.23 = 191,438.67 : x
  2. Step 2: Convert to fraction form
    528,476.93/792,713.23 = 191,438.67/x
  3. Step 3: Cross multiply
    528,476.93x = 792,713.23 × 191,438.67
  4. Step 4: Simplify right side
    528,476.93x = 151,755,963,325.01
  5. Step 5: Solve for x
    x = 151,755,963,325.01/528,476.93
  6. Step 6: Final answer
    x = 287,157.21

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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.