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Finding the Fourth Proportional to 388,807.04, 583,288.32 and 122,608.64

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Solution

The fourth proportional to 388,807.04, 583,288.32 and 122,608.64 is: 183,937.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,807.04 : 583,288.32 = 122,608.64 : x
  2. Step 2: Convert to fraction form
    388,807.04/583,288.32 = 122,608.64/x
  3. Step 3: Cross multiply
    388,807.04x = 583,288.32 × 122,608.64
  4. Step 4: Simplify right side
    388,807.04x = 71,516,187,643.08
  5. Step 5: Solve for x
    x = 71,516,187,643.08/388,807.04
  6. Step 6: Final answer
    x = 183,937.48

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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.