Home / 318,941.56-440,587.02-302,145.40

Finding the Fourth Proportional to 318,941.56, 440,587.02 and 302,145.40

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Solution

The fourth proportional to 318,941.56, 440,587.02 and 302,145.40 is: 417,384.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,941.56 : 440,587.02 = 302,145.40 : x
  2. Step 2: Convert to fraction form
    318,941.56/440,587.02 = 302,145.40/x
  3. Step 3: Cross multiply
    318,941.56x = 440,587.02 × 302,145.40
  4. Step 4: Simplify right side
    318,941.56x = 133,121,341,392.71
  5. Step 5: Solve for x
    x = 133,121,341,392.71/318,941.56
  6. Step 6: Final answer
    x = 417,384.74

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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.