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Finding the Fourth Proportional to 318,931.63, 440,109.45 and 175,688.60

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Solution

The fourth proportional to 318,931.63, 440,109.45 and 175,688.60 is: 242,441.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,931.63 : 440,109.45 = 175,688.60 : x
  2. Step 2: Convert to fraction form
    318,931.63/440,109.45 = 175,688.60/x
  3. Step 3: Cross multiply
    318,931.63x = 440,109.45 × 175,688.60
  4. Step 4: Simplify right side
    318,931.63x = 77,322,210,916.72
  5. Step 5: Solve for x
    x = 77,322,210,916.72/318,931.63
  6. Step 6: Final answer
    x = 242,441.34

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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.