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Finding the Fourth Proportional to 916,903.12, 1,375,289.75 and 242,969.50

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Solution

The fourth proportional to 916,903.12, 1,375,289.75 and 242,969.50 is: 364,437.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,903.12 : 1,375,289.75 = 242,969.50 : x
  2. Step 2: Convert to fraction form
    916,903.12/1,375,289.75 = 242,969.50/x
  3. Step 3: Cross multiply
    916,903.12x = 1,375,289.75 × 242,969.50
  4. Step 4: Simplify right side
    916,903.12x = 334,153,462,912.63
  5. Step 5: Solve for x
    x = 334,153,462,912.63/916,903.12
  6. Step 6: Final answer
    x = 364,437.04

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1.5x scale

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.