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Finding the Fourth Proportional to 292,803.40, 439,205.10 and 135,339.40

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Solution

The fourth proportional to 292,803.40, 439,205.10 and 135,339.40 is: 203,009.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,803.40 : 439,205.10 = 135,339.40 : x
  2. Step 2: Convert to fraction form
    292,803.40/439,205.10 = 135,339.40/x
  3. Step 3: Cross multiply
    292,803.40x = 439,205.10 × 135,339.40
  4. Step 4: Simplify right side
    292,803.40x = 59,441,754,710.94
  5. Step 5: Solve for x
    x = 59,441,754,710.94/292,803.40
  6. Step 6: Final answer
    x = 203,009.10

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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.