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Finding the Fourth Proportional to 384,938.40, 577,018.80 and 174,727.20

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Solution

The fourth proportional to 384,938.40, 577,018.80 and 174,727.20 is: 261,914.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,938.40 : 577,018.80 = 174,727.20 : x
  2. Step 2: Convert to fraction form
    384,938.40/577,018.80 = 174,727.20/x
  3. Step 3: Cross multiply
    384,938.40x = 577,018.80 × 174,727.20
  4. Step 4: Simplify right side
    384,938.40x = 100,820,879,271.36
  5. Step 5: Solve for x
    x = 100,820,879,271.36/384,938.40
  6. Step 6: Final answer
    x = 261,914.32

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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.