Home / 553,220.35-763,364.66-308,203.45

Finding the Fourth Proportional to 553,220.35, 763,364.66 and 308,203.45

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Solution

The fourth proportional to 553,220.35, 763,364.66 and 308,203.45 is: 425,276.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,220.35 : 763,364.66 = 308,203.45 : x
  2. Step 2: Convert to fraction form
    553,220.35/763,364.66 = 308,203.45/x
  3. Step 3: Cross multiply
    553,220.35x = 763,364.66 × 308,203.45
  4. Step 4: Simplify right side
    553,220.35x = 235,271,618,370.65
  5. Step 5: Solve for x
    x = 235,271,618,370.65/553,220.35
  6. Step 6: Final answer
    x = 425,276.51

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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.