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Finding the Fourth Proportional to 201,472,852.80, 302,209,279.20 and 65,172,014.40

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Solution

The fourth proportional to 201,472,852.80, 302,209,279.20 and 65,172,014.40 is: 97,758,021.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,472,852.80 : 302,209,279.20 = 65,172,014.40 : x
  2. Step 2: Convert to fraction form
    201,472,852.80/302,209,279.20 = 65,172,014.40/x
  3. Step 3: Cross multiply
    201,472,852.80x = 302,209,279.20 × 65,172,014.40
  4. Step 4: Simplify right side
    201,472,852.80x = 19,695,587,495,836,020
  5. Step 5: Solve for x
    x = 19,695,587,495,836,020/201,472,852.80
  6. Step 6: Final answer
    x = 97,758,021.60

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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.