Home / 390,368,479.71-538,674,192.57-223,071,541.83

Finding the Fourth Proportional to 390,368,479.71, 538,674,192.57 and 223,071,541.83

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Solution

The fourth proportional to 390,368,479.71, 538,674,192.57 and 223,071,541.83 is: 307,819,122.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,368,479.71 : 538,674,192.57 = 223,071,541.83 : x
  2. Step 2: Convert to fraction form
    390,368,479.71/538,674,192.57 = 223,071,541.83/x
  3. Step 3: Cross multiply
    390,368,479.71x = 538,674,192.57 × 223,071,541.83
  4. Step 4: Simplify right side
    390,368,479.71x = 120,162,882,680,620,256
  5. Step 5: Solve for x
    x = 120,162,882,680,620,256/390,368,479.71
  6. Step 6: Final answer
    x = 307,819,122.00

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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.