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Finding the Fourth Proportional to 369,871.80, 554,807.70 and 355,356.60

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Solution

The fourth proportional to 369,871.80, 554,807.70 and 355,356.60 is: 533,034.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,871.80 : 554,807.70 = 355,356.60 : x
  2. Step 2: Convert to fraction form
    369,871.80/554,807.70 = 355,356.60/x
  3. Step 3: Cross multiply
    369,871.80x = 554,807.70 × 355,356.60
  4. Step 4: Simplify right side
    369,871.80x = 197,154,577,925.82
  5. Step 5: Solve for x
    x = 197,154,577,925.82/369,871.80
  6. Step 6: Final answer
    x = 533,034.90

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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.