Home / 281,012.40-387,802.80-153,696.18

Finding the Fourth Proportional to 281,012.40, 387,802.80 and 153,696.18

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Solution

The fourth proportional to 281,012.40, 387,802.80 and 153,696.18 is: 212,103.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,012.40 : 387,802.80 = 153,696.18 : x
  2. Step 2: Convert to fraction form
    281,012.40/387,802.80 = 153,696.18/x
  3. Step 3: Cross multiply
    281,012.40x = 387,802.80 × 153,696.18
  4. Step 4: Simplify right side
    281,012.40x = 59,603,808,953.30
  5. Step 5: Solve for x
    x = 59,603,808,953.30/281,012.40
  6. Step 6: Final answer
    x = 212,103.84

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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.