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Finding the Fourth Proportional to 403,316.80, 604,975.20 and 308,838.40

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Solution

The fourth proportional to 403,316.80, 604,975.20 and 308,838.40 is: 463,257.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,316.80 : 604,975.20 = 308,838.40 : x
  2. Step 2: Convert to fraction form
    403,316.80/604,975.20 = 308,838.40/x
  3. Step 3: Cross multiply
    403,316.80x = 604,975.20 × 308,838.40
  4. Step 4: Simplify right side
    403,316.80x = 186,839,572,807.68
  5. Step 5: Solve for x
    x = 186,839,572,807.68/403,316.80
  6. Step 6: Final answer
    x = 463,257.60

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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.