Finding the Fourth Proportional to 387,686,709.14, 535,011,073.05 and 211,475,488.17
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Solution
The fourth proportional to 387,686,709.14, 535,011,073.05 and 211,475,488.17 is: 291,838,036.18
Step by Step Solution
- Step 1: Write the proportion equation
387,686,709.14 : 535,011,073.05 = 211,475,488.17 : x - Step 2: Convert to fraction form
387,686,709.14/535,011,073.05 = 211,475,488.17/x - Step 3: Cross multiply
387,686,709.14x = 535,011,073.05 × 211,475,488.17 - Step 4: Simplify right side
387,686,709.14x = 113,141,727,849,604,272 - Step 5: Solve for x
x = 113,141,727,849,604,272/387,686,709.14 - Step 6: Final answer
x = 291,838,036.18
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.