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Finding the Fourth Proportional to 660,030.92, 990,038.02 and 210,746.09

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Solution

The fourth proportional to 660,030.92, 990,038.02 and 210,746.09 is: 316,116.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,030.92 : 990,038.02 = 210,746.09 : x
  2. Step 2: Convert to fraction form
    660,030.92/990,038.02 = 210,746.09/x
  3. Step 3: Cross multiply
    660,030.92x = 990,038.02 × 210,746.09
  4. Step 4: Simplify right side
    660,030.92x = 208,646,641,666.34
  5. Step 5: Solve for x
    x = 208,646,641,666.34/660,030.92
  6. Step 6: Final answer
    x = 316,116.47

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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.