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Finding the Fourth Proportional to 201,275,315.80, 301,912,973.70 and 86,271,483.40

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Solution

The fourth proportional to 201,275,315.80, 301,912,973.70 and 86,271,483.40 is: 129,407,225.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,275,315.80 : 301,912,973.70 = 86,271,483.40 : x
  2. Step 2: Convert to fraction form
    201,275,315.80/301,912,973.70 = 86,271,483.40/x
  3. Step 3: Cross multiply
    201,275,315.80x = 301,912,973.70 × 86,271,483.40
  4. Step 4: Simplify right side
    201,275,315.80x = 26,046,480,098,804,188
  5. Step 5: Solve for x
    x = 26,046,480,098,804,188/201,275,315.80
  6. Step 6: Final answer
    x = 129,407,225.10

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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.