Home / 309,512,639.90-427,127,428.63-170,280,412.31

Finding the Fourth Proportional to 309,512,639.90, 427,127,428.63 and 170,280,412.31

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Solution

The fourth proportional to 309,512,639.90, 427,127,428.63 and 170,280,412.31 is: 234,986,961.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,512,639.90 : 427,127,428.63 = 170,280,412.31 : x
  2. Step 2: Convert to fraction form
    309,512,639.90/427,127,428.63 = 170,280,412.31/x
  3. Step 3: Cross multiply
    309,512,639.90x = 427,127,428.63 × 170,280,412.31
  4. Step 4: Simplify right side
    309,512,639.90x = 72,731,434,657,305,472
  5. Step 5: Solve for x
    x = 72,731,434,657,305,472/309,512,639.90
  6. Step 6: Final answer
    x = 234,986,961.05

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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.