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Finding the Fourth Proportional to 388,655.42, 583,315.43 and 152,164.17

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Solution

The fourth proportional to 388,655.42, 583,315.43 and 152,164.17 is: 228,376.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,655.42 : 583,315.43 = 152,164.17 : x
  2. Step 2: Convert to fraction form
    388,655.42/583,315.43 = 152,164.17/x
  3. Step 3: Cross multiply
    388,655.42x = 583,315.43 × 152,164.17
  4. Step 4: Simplify right side
    388,655.42x = 88,759,707,493.32
  5. Step 5: Solve for x
    x = 88,759,707,493.32/388,655.42
  6. Step 6: Final answer
    x = 228,376.36

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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.