Home / 280,425.84-386,988.96-153,104.32

Finding the Fourth Proportional to 280,425.84, 386,988.96 and 153,104.32

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Solution

The fourth proportional to 280,425.84, 386,988.96 and 153,104.32 is: 211,284.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,425.84 : 386,988.96 = 153,104.32 : x
  2. Step 2: Convert to fraction form
    280,425.84/386,988.96 = 153,104.32/x
  3. Step 3: Cross multiply
    280,425.84x = 386,988.96 × 153,104.32
  4. Step 4: Simplify right side
    280,425.84x = 59,249,681,568.31
  5. Step 5: Solve for x
    x = 59,249,681,568.31/280,425.84
  6. Step 6: Final answer
    x = 211,284.67

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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.