Home / 280,445,679.67-387,063,095.61-163,039,111.16

Finding the Fourth Proportional to 280,445,679.67, 387,063,095.61 and 163,039,111.16

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Solution

The fourth proportional to 280,445,679.67, 387,063,095.61 and 163,039,111.16 is: 225,021,912.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,445,679.67 : 387,063,095.61 = 163,039,111.16 : x
  2. Step 2: Convert to fraction form
    280,445,679.67/387,063,095.61 = 163,039,111.16/x
  3. Step 3: Cross multiply
    280,445,679.67x = 387,063,095.61 × 163,039,111.16
  4. Step 4: Simplify right side
    280,445,679.67x = 63,106,423,072,846,568
  5. Step 5: Solve for x
    x = 63,106,423,072,846,568/280,445,679.67
  6. Step 6: Final answer
    x = 225,021,912.08

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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.