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Finding the Fourth Proportional to 388,959.06, 536,762.70 and 210,111.06

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Solution

The fourth proportional to 388,959.06, 536,762.70 and 210,111.06 is: 289,952.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,959.06 : 536,762.70 = 210,111.06 : x
  2. Step 2: Convert to fraction form
    388,959.06/536,762.70 = 210,111.06/x
  3. Step 3: Cross multiply
    388,959.06x = 536,762.70 × 210,111.06
  4. Step 4: Simplify right side
    388,959.06x = 112,779,779,865.46
  5. Step 5: Solve for x
    x = 112,779,779,865.46/388,959.06
  6. Step 6: Final answer
    x = 289,952.83

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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.