Home / 285,368,886.16-393,811,078.60-154,988,694.16

Finding the Fourth Proportional to 285,368,886.16, 393,811,078.60 and 154,988,694.16

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Solution

The fourth proportional to 285,368,886.16, 393,811,078.60 and 154,988,694.16 is: 213,885,492.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,368,886.16 : 393,811,078.60 = 154,988,694.16 : x
  2. Step 2: Convert to fraction form
    285,368,886.16/393,811,078.60 = 154,988,694.16/x
  3. Step 3: Cross multiply
    285,368,886.16x = 393,811,078.60 × 154,988,694.16
  4. Step 4: Simplify right side
    285,368,886.16x = 61,036,264,817,955,120
  5. Step 5: Solve for x
    x = 61,036,264,817,955,120/285,368,886.16
  6. Step 6: Final answer
    x = 213,885,492.70

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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.