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Finding the Fourth Proportional to 306,058.70, 459,088.05 and 211,580.30

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Solution

The fourth proportional to 306,058.70, 459,088.05 and 211,580.30 is: 317,370.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,058.70 : 459,088.05 = 211,580.30 : x
  2. Step 2: Convert to fraction form
    306,058.70/459,088.05 = 211,580.30/x
  3. Step 3: Cross multiply
    306,058.70x = 459,088.05 × 211,580.30
  4. Step 4: Simplify right side
    306,058.70x = 97,133,987,345.42
  5. Step 5: Solve for x
    x = 97,133,987,345.42/306,058.70
  6. Step 6: Final answer
    x = 317,370.45

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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.