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Finding the Fourth Proportional to 291,831.40, 437,406.90 and 134,075.80

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Solution

The fourth proportional to 291,831.40, 437,406.90 and 134,075.80 is: 200,957.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,831.40 : 437,406.90 = 134,075.80 : x
  2. Step 2: Convert to fraction form
    291,831.40/437,406.90 = 134,075.80/x
  3. Step 3: Cross multiply
    291,831.40x = 437,406.90 × 134,075.80
  4. Step 4: Simplify right side
    291,831.40x = 58,645,680,043.02
  5. Step 5: Solve for x
    x = 58,645,680,043.02/291,831.40
  6. Step 6: Final answer
    x = 200,957.40

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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.