Home / 280,518.01-387,116.27-153,193.60

Finding the Fourth Proportional to 280,518.01, 387,116.27 and 153,193.60

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Solution

The fourth proportional to 280,518.01, 387,116.27 and 153,193.60 is: 211,407.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,518.01 : 387,116.27 = 153,193.60 : x
  2. Step 2: Convert to fraction form
    280,518.01/387,116.27 = 153,193.60/x
  3. Step 3: Cross multiply
    280,518.01x = 387,116.27 × 153,193.60
  4. Step 4: Simplify right side
    280,518.01x = 59,303,732,701.31
  5. Step 5: Solve for x
    x = 59,303,732,701.31/280,518.01
  6. Step 6: Final answer
    x = 211,407.94

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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.