Home / 309,512,644.40-427,127,434.85-170,280,416.81

Finding the Fourth Proportional to 309,512,644.40, 427,127,434.85 and 170,280,416.81

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Solution

The fourth proportional to 309,512,644.40, 427,127,434.85 and 170,280,416.81 is: 234,986,967.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,512,644.40 : 427,127,434.85 = 170,280,416.81 : x
  2. Step 2: Convert to fraction form
    309,512,644.40/427,127,434.85 = 170,280,416.81/x
  3. Step 3: Cross multiply
    309,512,644.40x = 427,127,434.85 × 170,280,416.81
  4. Step 4: Simplify right side
    309,512,644.40x = 72,731,437,638,737,648
  5. Step 5: Solve for x
    x = 72,731,437,638,737,648/309,512,644.40
  6. Step 6: Final answer
    x = 234,986,967.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.