Home / 282,312.32-389,588-154,984.64

Finding the Fourth Proportional to 282,312.32, 389,588 and 154,984.64

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Solution

The fourth proportional to 282,312.32, 389,588 and 154,984.64 is: 213,877.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,312.32 : 389,588 = 154,984.64 : x
  2. Step 2: Convert to fraction form
    282,312.32/389,588 = 154,984.64/x
  3. Step 3: Cross multiply
    282,312.32x = 389,588 × 154,984.64
  4. Step 4: Simplify right side
    282,312.32x = 60,380,155,928.32
  5. Step 5: Solve for x
    x = 60,380,155,928.32/282,312.32
  6. Step 6: Final answer
    x = 213,877.16

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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.