Home / 261,338,431.89-392,005,904.01-105,889,946.49

Finding the Fourth Proportional to 261,338,431.89, 392,005,904.01 and 105,889,946.49

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Solution

The fourth proportional to 261,338,431.89, 392,005,904.01 and 105,889,946.49 is: 158,834,213.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,338,431.89 : 392,005,904.01 = 105,889,946.49 : x
  2. Step 2: Convert to fraction form
    261,338,431.89/392,005,904.01 = 105,889,946.49/x
  3. Step 3: Cross multiply
    261,338,431.89x = 392,005,904.01 × 105,889,946.49
  4. Step 4: Simplify right side
    261,338,431.89x = 41,509,484,199,382,976
  5. Step 5: Solve for x
    x = 41,509,484,199,382,976/261,338,431.89
  6. Step 6: Final answer
    x = 158,834,213.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.