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Finding the Fourth Proportional to 172,465,409.80, 258,698,114.70 and 155,459,297.80

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Solution

The fourth proportional to 172,465,409.80, 258,698,114.70 and 155,459,297.80 is: 233,188,946.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,465,409.80 : 258,698,114.70 = 155,459,297.80 : x
  2. Step 2: Convert to fraction form
    172,465,409.80/258,698,114.70 = 155,459,297.80/x
  3. Step 3: Cross multiply
    172,465,409.80x = 258,698,114.70 × 155,459,297.80
  4. Step 4: Simplify right side
    172,465,409.80x = 40,217,027,253,445,856
  5. Step 5: Solve for x
    x = 40,217,027,253,445,856/172,465,409.80
  6. Step 6: Final answer
    x = 233,188,946.70

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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.