Home / 280,898.51-387,641.57-153,574.11

Finding the Fourth Proportional to 280,898.51, 387,641.57 and 153,574.11

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Solution

The fourth proportional to 280,898.51, 387,641.57 and 153,574.11 is: 211,933.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,898.51 : 387,641.57 = 153,574.11 : x
  2. Step 2: Convert to fraction form
    280,898.51/387,641.57 = 153,574.11/x
  3. Step 3: Cross multiply
    280,898.51x = 387,641.57 × 153,574.11
  4. Step 4: Simplify right side
    280,898.51x = 59,531,708,343.88
  5. Step 5: Solve for x
    x = 59,531,708,343.88/280,898.51
  6. Step 6: Final answer
    x = 211,933.16

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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.