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Finding the Fourth Proportional to 560,001.61, 840,005.45 and 139,277.48

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Solution

The fourth proportional to 560,001.61, 840,005.45 and 139,277.48 is: 208,916.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,001.61 : 840,005.45 = 139,277.48 : x
  2. Step 2: Convert to fraction form
    560,001.61/840,005.45 = 139,277.48/x
  3. Step 3: Cross multiply
    560,001.61x = 840,005.45 × 139,277.48
  4. Step 4: Simplify right side
    560,001.61x = 116,993,841,565.88
  5. Step 5: Solve for x
    x = 116,993,841,565.88/560,001.61
  6. Step 6: Final answer
    x = 208,916.98

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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.