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Finding the Fourth Proportional to 202,863,762.76, 304,440,931.32 and 86,360,800.12

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Solution

The fourth proportional to 202,863,762.76, 304,440,931.32 and 86,360,800.12 is: 129,603,050.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,863,762.76 : 304,440,931.32 = 86,360,800.12 : x
  2. Step 2: Convert to fraction form
    202,863,762.76/304,440,931.32 = 86,360,800.12/x
  3. Step 3: Cross multiply
    202,863,762.76x = 304,440,931.32 × 86,360,800.12
  4. Step 4: Simplify right side
    202,863,762.76x = 26,291,762,418,073,168
  5. Step 5: Solve for x
    x = 26,291,762,418,073,168/202,863,762.76
  6. Step 6: Final answer
    x = 129,603,050.15

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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.