Home / 318,935.10-440,065.53-242,433.84

Finding the Fourth Proportional to 318,935.10, 440,065.53 and 242,433.84

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Solution

The fourth proportional to 318,935.10, 440,065.53 and 242,433.84 is: 334,509.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,935.10 : 440,065.53 = 242,433.84 : x
  2. Step 2: Convert to fraction form
    318,935.10/440,065.53 = 242,433.84/x
  3. Step 3: Cross multiply
    318,935.10x = 440,065.53 × 242,433.84
  4. Step 4: Simplify right side
    318,935.10x = 106,686,776,289.54
  5. Step 5: Solve for x
    x = 106,686,776,289.54/318,935.10
  6. Step 6: Final answer
    x = 334,509.36

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1.5x scale

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.