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Finding the Fourth Proportional to 388,973.69, 583,127.71 and 149,259.60

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Solution

The fourth proportional to 388,973.69, 583,127.71 and 149,259.60 is: 223,761.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,973.69 : 583,127.71 = 149,259.60 : x
  2. Step 2: Convert to fraction form
    388,973.69/583,127.71 = 149,259.60/x
  3. Step 3: Cross multiply
    388,973.69x = 583,127.71 × 149,259.60
  4. Step 4: Simplify right side
    388,973.69x = 87,037,408,370.37
  5. Step 5: Solve for x
    x = 87,037,408,370.37/388,973.69
  6. Step 6: Final answer
    x = 223,761.69

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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.