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Finding the Fourth Proportional to 353,453.50, 487,762.05 and 210,210.40

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Solution

The fourth proportional to 353,453.50, 487,762.05 and 210,210.40 is: 290,088.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,453.50 : 487,762.05 = 210,210.40 : x
  2. Step 2: Convert to fraction form
    353,453.50/487,762.05 = 210,210.40/x
  3. Step 3: Cross multiply
    353,453.50x = 487,762.05 × 210,210.40
  4. Step 4: Simplify right side
    353,453.50x = 102,532,655,635.32
  5. Step 5: Solve for x
    x = 102,532,655,635.32/353,453.50
  6. Step 6: Final answer
    x = 290,088.10

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.