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Finding the Fourth Proportional to 388,901.60, 583,006.80 and 255,845.60

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Solution

The fourth proportional to 388,901.60, 583,006.80 and 255,845.60 is: 383,541.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,901.60 : 583,006.80 = 255,845.60 : x
  2. Step 2: Convert to fraction form
    388,901.60/583,006.80 = 255,845.60/x
  3. Step 3: Cross multiply
    388,901.60x = 583,006.80 × 255,845.60
  4. Step 4: Simplify right side
    388,901.60x = 149,159,724,550.08
  5. Step 5: Solve for x
    x = 149,159,724,550.08/388,901.60
  6. Step 6: Final answer
    x = 383,541.04

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1.5x scale

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.