Home / 281,210.02-388,069.86-153,885.62

Finding the Fourth Proportional to 281,210.02, 388,069.86 and 153,885.62

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Solution

The fourth proportional to 281,210.02, 388,069.86 and 153,885.62 is: 212,362.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,210.02 : 388,069.86 = 153,885.62 : x
  2. Step 2: Convert to fraction form
    281,210.02/388,069.86 = 153,885.62/x
  3. Step 3: Cross multiply
    281,210.02x = 388,069.86 × 153,885.62
  4. Step 4: Simplify right side
    281,210.02x = 59,718,371,009.41
  5. Step 5: Solve for x
    x = 59,718,371,009.41/281,210.02
  6. Step 6: Final answer
    x = 212,362.17

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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.