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Finding the Fourth Proportional to 191,045.40, 286,859.70 and 146,722.20

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Solution

The fourth proportional to 191,045.40, 286,859.70 and 146,722.20 is: 220,307.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,045.40 : 286,859.70 = 146,722.20 : x
  2. Step 2: Convert to fraction form
    191,045.40/286,859.70 = 146,722.20/x
  3. Step 3: Cross multiply
    191,045.40x = 286,859.70 × 146,722.20
  4. Step 4: Simplify right side
    191,045.40x = 42,088,686,275.34
  5. Step 5: Solve for x
    x = 42,088,686,275.34/191,045.40
  6. Step 6: Final answer
    x = 220,307.25

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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.