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Finding the Fourth Proportional to 243,792.64, 336,465 and 136,368.64

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Solution

The fourth proportional to 243,792.64, 336,465 and 136,368.64 is: 188,206.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,792.64 : 336,465 = 136,368.64 : x
  2. Step 2: Convert to fraction form
    243,792.64/336,465 = 136,368.64/x
  3. Step 3: Cross multiply
    243,792.64x = 336,465 × 136,368.64
  4. Step 4: Simplify right side
    243,792.64x = 45,883,274,457.60
  5. Step 5: Solve for x
    x = 45,883,274,457.60/243,792.64
  6. Step 6: Final answer
    x = 188,206.15

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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.