Home / 280,680,807.90-387,319,851.63-163,197,803.28

Finding the Fourth Proportional to 280,680,807.90, 387,319,851.63 and 163,197,803.28

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Solution

The fourth proportional to 280,680,807.90, 387,319,851.63 and 163,197,803.28 is: 225,201,535.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,680,807.90 : 387,319,851.63 = 163,197,803.28 : x
  2. Step 2: Convert to fraction form
    280,680,807.90/387,319,851.63 = 163,197,803.28/x
  3. Step 3: Cross multiply
    280,680,807.90x = 387,319,851.63 × 163,197,803.28
  4. Step 4: Simplify right side
    280,680,807.90x = 63,209,748,952,751,528
  5. Step 5: Solve for x
    x = 63,209,748,952,751,528/280,680,807.90
  6. Step 6: Final answer
    x = 225,201,535.60

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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.