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Finding the Fourth Proportional to 468,139.80, 702,209.70 and 288,368.40

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Solution

The fourth proportional to 468,139.80, 702,209.70 and 288,368.40 is: 432,552.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,139.80 : 702,209.70 = 288,368.40 : x
  2. Step 2: Convert to fraction form
    468,139.80/702,209.70 = 288,368.40/x
  3. Step 3: Cross multiply
    468,139.80x = 702,209.70 × 288,368.40
  4. Step 4: Simplify right side
    468,139.80x = 202,495,087,653.48
  5. Step 5: Solve for x
    x = 202,495,087,653.48/468,139.80
  6. Step 6: Final answer
    x = 432,552.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.