Home / 280,130.16-386,578.26-152,804.64

Finding the Fourth Proportional to 280,130.16, 386,578.26 and 152,804.64

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Solution

The fourth proportional to 280,130.16, 386,578.26 and 152,804.64 is: 210,869.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,130.16 : 386,578.26 = 152,804.64 : x
  2. Step 2: Convert to fraction form
    280,130.16/386,578.26 = 152,804.64/x
  3. Step 3: Cross multiply
    280,130.16x = 386,578.26 × 152,804.64
  4. Step 4: Simplify right side
    280,130.16x = 59,070,951,851.13
  5. Step 5: Solve for x
    x = 59,070,951,851.13/280,130.16
  6. Step 6: Final answer
    x = 210,869.66

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1.5x scale

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.