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Finding the Fourth Proportional to 171,097,328.80, 256,708,978.80 and 56,085,623.20

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Solution

The fourth proportional to 171,097,328.80, 256,708,978.80 and 56,085,623.20 is: 84,149,081.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,097,328.80 : 256,708,978.80 = 56,085,623.20 : x
  2. Step 2: Convert to fraction form
    171,097,328.80/256,708,978.80 = 56,085,623.20/x
  3. Step 3: Cross multiply
    171,097,328.80x = 256,708,978.80 × 56,085,623.20
  4. Step 4: Simplify right side
    171,097,328.80x = 14,397,683,057,033,590
  5. Step 5: Solve for x
    x = 14,397,683,057,033,590/171,097,328.80
  6. Step 6: Final answer
    x = 84,149,081.45

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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.