Home / 465,249,990.96-642,016,140.12-256,394,465.28

Finding the Fourth Proportional to 465,249,990.96, 642,016,140.12 and 256,394,465.28

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Solution

The fourth proportional to 465,249,990.96, 642,016,140.12 and 256,394,465.28 is: 353,808,464.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,249,990.96 : 642,016,140.12 = 256,394,465.28 : x
  2. Step 2: Convert to fraction form
    465,249,990.96/642,016,140.12 = 256,394,465.28/x
  3. Step 3: Cross multiply
    465,249,990.96x = 642,016,140.12 × 256,394,465.28
  4. Step 4: Simplify right side
    465,249,990.96x = 164,609,384,947,196,960
  5. Step 5: Solve for x
    x = 164,609,384,947,196,960/465,249,990.96
  6. Step 6: Final answer
    x = 353,808,464.58

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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.