Home / 280,931.54-387,684.99-151,870.10

Finding the Fourth Proportional to 280,931.54, 387,684.99 and 151,870.10

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Solution

The fourth proportional to 280,931.54, 387,684.99 and 151,870.10 is: 209,580.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,931.54 : 387,684.99 = 151,870.10 : x
  2. Step 2: Convert to fraction form
    280,931.54/387,684.99 = 151,870.10/x
  3. Step 3: Cross multiply
    280,931.54x = 387,684.99 × 151,870.10
  4. Step 4: Simplify right side
    280,931.54x = 58,877,756,261.37
  5. Step 5: Solve for x
    x = 58,877,756,261.37/280,931.54
  6. Step 6: Final answer
    x = 209,580.45

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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.