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Finding the Fourth Proportional to 153,868.80, 216,038.40 and 153,868.80

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Solution

The fourth proportional to 153,868.80, 216,038.40 and 153,868.80 is: 216,038.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,868.80 : 216,038.40 = 153,868.80 : x
  2. Step 2: Convert to fraction form
    153,868.80/216,038.40 = 153,868.80/x
  3. Step 3: Cross multiply
    153,868.80x = 216,038.40 × 153,868.80
  4. Step 4: Simplify right side
    153,868.80x = 33,241,569,361.92
  5. Step 5: Solve for x
    x = 33,241,569,361.92/153,868.80
  6. Step 6: Final answer
    x = 216,038.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.