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Finding the Fourth Proportional to 554,479.78, 831,597.05 and 155,013.16

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Solution

The fourth proportional to 554,479.78, 831,597.05 and 155,013.16 is: 232,485.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,479.78 : 831,597.05 = 155,013.16 : x
  2. Step 2: Convert to fraction form
    554,479.78/831,597.05 = 155,013.16/x
  3. Step 3: Cross multiply
    554,479.78x = 831,597.05 × 155,013.16
  4. Step 4: Simplify right side
    554,479.78x = 128,908,485,792.11
  5. Step 5: Solve for x
    x = 128,908,485,792.11/554,479.78
  6. Step 6: Final answer
    x = 232,485.46

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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.