Home / 212,955,985.66-319,402,009.10-67,370,630.40

Finding the Fourth Proportional to 212,955,985.66, 319,402,009.10 and 67,370,630.40

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Solution

The fourth proportional to 212,955,985.66, 319,402,009.10 and 67,370,630.40 is: 101,045,831.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,955,985.66 : 319,402,009.10 = 67,370,630.40 : x
  2. Step 2: Convert to fraction form
    212,955,985.66/319,402,009.10 = 67,370,630.40/x
  3. Step 3: Cross multiply
    212,955,985.66x = 319,402,009.10 × 67,370,630.40
  4. Step 4: Simplify right side
    212,955,985.66x = 21,518,314,704,093,540
  5. Step 5: Solve for x
    x = 21,518,314,704,093,540/212,955,985.66
  6. Step 6: Final answer
    x = 101,045,831.78

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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.