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Finding the Fourth Proportional to 554,271.41, 831,408.86 and 154,909.55

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Solution

The fourth proportional to 554,271.41, 831,408.86 and 154,909.55 is: 232,364.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,271.41 : 831,408.86 = 154,909.55 : x
  2. Step 2: Convert to fraction form
    554,271.41/831,408.86 = 154,909.55/x
  3. Step 3: Cross multiply
    554,271.41x = 831,408.86 × 154,909.55
  4. Step 4: Simplify right side
    554,271.41x = 128,793,172,368.61
  5. Step 5: Solve for x
    x = 128,793,172,368.61/554,271.41
  6. Step 6: Final answer
    x = 232,364.81

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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.