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Finding the Fourth Proportional to 659,374.34, 989,050.70 and 210,089.10

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Solution

The fourth proportional to 659,374.34, 989,050.70 and 210,089.10 is: 315,130.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,374.34 : 989,050.70 = 210,089.10 : x
  2. Step 2: Convert to fraction form
    659,374.34/989,050.70 = 210,089.10/x
  3. Step 3: Cross multiply
    659,374.34x = 989,050.70 × 210,089.10
  4. Step 4: Simplify right side
    659,374.34x = 207,788,771,417.37
  5. Step 5: Solve for x
    x = 207,788,771,417.37/659,374.34
  6. Step 6: Final answer
    x = 315,130.21

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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.